放射性

8 Warning signs with the following wording "DANGER RADIATION HAZARD" both in Chinese and English, and the international symbol for radiation shall be posted so as to be visible from all approaches to the barricaded / taped area.

应在接近设置围栏区域的各个方向悬挂明显警告牌，警告牌上应用中英文写上"危险：放射性危险物"，并有国际通用放射性物标志。

Based upon monitoring results of radioactive materials in tunnel excavation construction in Qinling Tunnel the intensity of radioactivity and distribution regularities is summarized, meanwhile, preliminary assessment and research are conducted for radiation hazard and protection.

结合西康线秦岭特长隧道Ⅱ线平导开挖过程中对隧道放射性物质监测结果，针对隧道内放射性强度、分布规律进行了归纳、总结，并就其辐射危害及防护进行了初步评价和研究。

Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.

"几种氡的同位素的放射性气体，是放射性物质衰变的产物。"

Tp the time required for one-half of the atoms in a group of radioactive atoms to decay.

放射性药物radiopharmaceuticals是指药物的本身含有放射性核素，用于人体疾病的诊断与治疗的特殊药物。

The radioactive wastes release a lot of energy due to radioactive disintegration.

由于放射性蜕变，放射性废料释放出大量的能量。

The radioactive fall-out from the death last week in London of Alexander Litvinenko—a former KGB agent who was apparently poisoned with polonium—may have been small (although radioactive traces have been found on aircraft that flew between Moscow and London before Mr Litvinenko's death).

上周发生在伦敦的前俄罗斯克格勃间谍Alexander Litvinenko因为放射性钋210中毒死亡很可能会大事化小，小事化了（尽管这种放射性物质泄漏在Litvinenko死亡案之间曾经在莫斯科与伦敦之间的航班当中发现过）。

The importation of the radioactive isotope, radiation equipment and other radioactive materials should come up to applicable state regulations.

进口放射性同位素、射线装置和含有放射性物质的物品的，按照国家有关规定办理。

A radioactive isotope of iodine widely used as a tracer in medical diagnosis .

放射性碘碘的一种放射性同位素，广泛地用于医学诊断作为追踪剂

A radioactive isotope gradually loses its radioactivity and decays over time into the normal form of the substance.

放射性同位素逐渐丧失放射性，并逐渐衰变成该物质的正常形式。

For instance, a compound can be synthesized with one of the atoms replaced by a radioactive isotope of the element.

例如，用某种放射性元素来代替原来的元素合成某一化合物，则放射性就可追踪这一化合物的合成过程。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。